Noiseless gear.



.J. J. BURKE.

NOISELESS GEAR.

APPLICATION HLED APR. 19. 1916.

L1?,26L Patented Sept. 1916.

55m uewtoz "mime 0M '5 i JOSEPH IT. BURKE, F IP'UTNAM, CONNEGTIGUT.

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tremor.

Application filed April 19, 1.93.6. fierial N0. 92,174.

To all whom it may concern:

Be it known that I, JOSEPH J. BURKE, a citizen of the United States, residin at Putnam, in the county Of Windham, Estate or Connecticut, have invented a new and use ful- N oiseless Gear; and I do hereby declare the following to be a full, clear, and exact de- I scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the art of ma chine elements, and more especially to an improved noiseless gear,'and an object of the invention is to provide a gear of this kind, so constructed as to prevent noise known as clocking, and such gear is adapted'principally for use, where noisy gears are obnoxious.

. Another object of the invention is to provide a device of this kind comprising simple and improved, and practical featuresor' con struction. v

One of the features of construction is the provision of a device of this kind consisting of two gear members,-one mounted upon the other, and one adaptedto be keyed to a shaft, and provided with a yieldable or spring tensioned device between the two gear members, adapted to be tensioned by adjust- 'ing one gear member relative to the other, after which the teeth the gear members are thrown in Emesh' with an adjacent gear (not shown).

In practical fields, the details of construction may necessitate alterations, falling withinthe scope of what is claimed.

The invention comprises further features and combination of parts, as hereinafter set forth, shown in the drawings and claimed.

In the drawings: Figure l is a sectional view through the improved noiseless gear. Fig. 2 illustrates the two members of the gearseparated, and the yieldable or tensioneddevice disassembled.

Referring more especially to the drawings,- l designates a gear as a whole, which comprises two gear members 2 and 3. The gearmember 2 upon one face is provided with an annular depression or annular countersunke'n recess i, and an adjoining cylindrical boss 5. The other gear member Specification of Letters I-atcnt.

Patented dept, 5, i916,

is provided with a circular openiirrfg 6, of a diameter corresponding with and adapted to receive theboss 5 of the gear member 2.

2 is keyed upon a shaft 11 as shown, and

after the gear members have been adjusted I relative to each other, the teeth of the two gear members are arranged. in mesh'with I the teeth of an adjacent gear 12. By this construction it will be seen that when the gear comprising the two gear members Totate the usual cloclnn no1se incident to the teethjof the gears meshing is avoided, particularly byi'provision of the leaf spring tensioning device;

"The inventionhaving been set forth, what is claimed asnew-and useful is:

h noiselessgear, comprising a pair of gear members er. corresponding diameters and having teeth of corresponding pitch, one of said gear membershaving a circular boss concentric 'therewith and adapted to be keyed-"upon a shalt, the other gear member having a concentrically arranged circular opening corresponding in diameter with and fitting the boss, the adjacent faces of the gear members having annular depressions corresponding with and registering concentrically, with each other, each. of theannular depressions having laterally extending pins, and a leaf spring tensioning device arranged in said registering annular depressions and connecting said pms.- I g In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. JOSEPH J. BURKE.

Witnesses:

Ennnsr G. tllonsn, M

RAYMOND S. Mninnnr. 

